Adding 2nd Storey to 1970's bungalow

[daveincornwall]

Hi,

 

We are in the process of starting a build adding a 2nd storey to a 1970's bungalow near the sea in Cornwall. We've got lots of RSJ's and it's quite a build, mainly on here to explore heating options as it's a definite weak point for my knowledge set. 

 

Great to be here. Thanks for reading. 

[Nick1c]

Hi,

We built a house near lands end, overlooking the sea. It’s a great place to be, but has its challenges - salt, wind & humidity being chief amongst them. 
Anything that can corrode will, & at a frightening rate, so it is worth ensuring everything (including window & door hinges/ furniture) is warranted for a marine environment.
Airtightness is key, it will minimise heat loss from wind wash & make it easier to control the internal environment via managing the ventilation. This extends to the window/ door seals, in our first week in the house we had 70+mph winds straight off the sea onto the house, this forced some water through the seals, but thankfully it drained out through weep holes. 
Heating is underfloor via an ASHP, we have only one zone per floor and it works well. 
Good luck!